Electric cut-out



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Patented Jan. 9, 1894 lNVENTO/i .Z lbert .2 563mm W/TNESSES: magyATTORNEY.

NITED STATES PATENT OFFICE ALBERT l. SEYMOUR, OF SYRACUSE, NE\V YORK.

ELECTRIC CUT-OUT.

SPECIFICATION forming part of Letters Patent No. 512,331, dated January9, 1894.

Application filed November 18,1892. Serial No. 452,387. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALBERT P. SEYMOUR, a citizen of the United States,and a resident of Syracuse, in the county of Onondaga and State of NewYork, have invented a certain new and useful Electric Out-Out, of whichthe following is a specification.

My invention relates to the construction of electric cut-outs in which afusible wire or strip is employed.

The invention is applicable to fixture cutouts, line cut-outs or otherforms, as will be plain from the subjoined description taken inconnection with the accompanying drawings.

The general object of the invention is to provide a cheap andinexpensive out-out in which little metal work will be required and fewfastening or clamping screws employed.

A further object of the invention is to provide complete protection forthe fuse and also to obviate the formation and continuance of anelectric arc in the device after blowing of the fuse.

Briefly speaking the invention consists in so constructing the line andfuse clamp blocks or plates that they may directly interlock with oneanother for the purpose of holding the cover and base or other partssupporting the line and fuse clamps, respectively, to gether, and inproviding for the ready attachment. of the cover by screws which fastenthe metal work of the clamp and at the same time tighten itininterlocking or hooking position, said screws being accessible fromthe outside of the cut-out, as hereinafter described.

The invention consists further in the special combinations and features,as hereinafter described and then specified in the claims.

In the accompanying drawings:Figure 1, is a perspective of a straightsingle pole cutout embodying my invention, the cover and basebeingseparated and the cover inverted to show the interior construction.Fig. 2, shows the parts as placed together. Fig. 3, illustrates afixture cut-out containing my invention. Fig. 4., illustrates inperspective a motor cut-out embodying the invention, the base andcoverbeing shown as made of transparent material in order to enable theconstruction to be readily seen when the cover and base are puttogether. Figs. 5 and 6, are

plan views of the interior of the two parts of said motor cut-out.

A, indicates the base of porcelain or other suitable insulating materialprovided, if desired, with a hole through which ascrew may pass forfastening it to a suitable base.

B, B, indicate the .line clamps. These clamps consist preferably of apair of clamp jaws secured together by screws 0, O, which pass throughthe base A, so that their heads are accessible from beneath, as bettershown in the illustration Fig. 8, of the fixture cutout. The clamps B,are supported as shown upon suitable offsets or shoulders on the base sothat they will overhang and form hooks or projections with which theclamps for the fuse may interlock or engage.

D, D, indihate the fuse clamps which are supported on suitable shouldersor offsets 011 the cover F, and overhang, or project as shown, so thatthe cover may be slid sidewise upon ''the base and the clamps D, D, andB, B, hook or interlock, in obvious fashion, directly upon one anotherso as to hold the cover from detachment.

G, is the fuse wire.

E, E, are screws for the fuse clamps. These screws pass through, asindicated in the perspective Fig. 2, to the exterior of the device so asto be accessible fortightening or loosening, as desired, in the same waythat the screws 0, C, may be operated. It is preferable, generally. toemploy the screws 0, C, as the means for tightening the clamps againstone another when hooked or interlocked. It will be seen that whicheverscrews be used for the purpose, they have the function not only ofholding the metal work down and clamping the wire, whether the wire bethe line wire or the fuse wire, but further of fastening the base andcover together securely.

In Fig. 1, the metal work which forms the clamp for the fuse is shown asa single plate under which the fuse wire is fastened, but the fuseclamps might be made of two plates, as indicated in Fig. a, where thefuse clamps and other parts are marked with the same reference letter.The clamp screws engage with the part of the clamp farthest from theseat or surface on which the plates rest, and when tightened serve toclamp the wire between the jaws as well as to force the clamp itselfagainst the part with which it interlocks, which part may, as shownherein and before described, be the clamp for the line wire. The linewire itself may be held by a similar clamp. The junction line of thecover and base appears at the end of the fuse in' this View. The recessor bay is upon the part marked F, .the skirt on the part marked A,1{)itting down over the space formed by such With the various screwsdescribed, it is desirable to employ spring washers under the headsthereof.

To remove the fuse cover in orderto renew the fuse it is only necessaryto loosen the screws 0, or, as will be obvious, the screws E, might beemployed in the same way.

As indicated in Fig. 4, the fuse channel or seat is bent between thefuse clamps so as to provide two or more angles around which the fusewire passes. By this means the continuance of the arc after blowing thefuse may be prevented as it is difficult to maintain an are around anangle or corner. 7

, To effectually protect the fuse I provide the cover plate F, as shownin Fig. 1, with a skirt or flange H.

What I claim as my invention is- 1. An electric cut-out havinginterlocking line and fuse clamps mounted respectively upon the base andupon the cover plate with the body of one interlocking or hookingdirectly upon the body of the other, and a screw passing through thecover and tapped into the metal work of the clamp mounted on the insideof said cover, as and for the purpose described. r

2. In an electric cut-out, the combination,

of a base, a cover, clamp metal work interlocking with another part, asdescribed, and a screw passing into said metal and serving the doublefunction of clamping the wire and fastening the base and cover together.

3. In an electric cut-out, the combination of flat line and fuse clampplates projecting beyond supporting shoulders or ofisets on the base andcover respectively, whereby they may be hooked together, and screwstapped into the clamps on the cover from the exterior thereof, as andfor the purpose described.

. 4. The combination with the base and cover in a fuse cut-out, ofinterlocking clamps, and fastening screws for holding the clamp metalwork down upon its seat, said screws being accessible for tightening orloosening from the outside of the cut-out so as to permit them to beused also to tighten the clamps upon one another when-interlocked,as andfor the purpose described.

5. In a fuse cut-out, the combination of the base, the cover,having aninternal projecting part the clamp plate serving as a hook engaging saidpart to hold the cover and base together, and a tightening screw passinginto sairl plate from the exterior of the cut-out and serving the doublepurpose of holding the plate on its supporting surface or seat andtightening the clamp plate on which it hooks.

Signed at Syracuse, in the county of Ononagainst the part daga and Stateof New York, this 3d day of November, A. D. 1892.

ALBERT P. SEYMOUR.

Witnesses: FRANK J. WEBB, J OHN O. KEEFFE.

